Narrator: High-quality black opal can cost over $10,000 per carat, making it one of the world's most expensive gemstones. But mining black opal isn't easy. After investing tens of thousands of ...

Straight black lines or bands often cross the patches, and these are due to polysynthetic or mechanical twin planes of the photonic crystal, merging at the surface of the gem (Kinder, 1969; Gauthier, ...

As part of its LVMH Watch Week presentation, Gérald Genta has debuted the new Gentissima Oursin Fire Opal timepiece. The ...

This large Australian light opal cabochon weighs 117.85 carats. Small play-of-color flashes of orange and green predominate in a pinfire pattern, with spots of a more muted blue over a grayish ...

Tucked beneath the back of the stairs at the Ramada by Wyndham Tucson, 777 W. Cushing Street, Eritrean-born Huruy Zerzghi ...

The Gentissima Oursin Fire Opal has fire opal gemstones surrounding the bezel, making it look like a blossoming sunflower. As part of its LVMH Watch Week presentation, Gérald Genta has debuted ...

emerald, sapphire, turquoise, opal, ruby and yellow sapphire. The luxurious 14-karat SCRIBE brand “speaks” the coded gemstone language of acrostic jewelry, which uses the first letter of a ...